... Several previous studies indicated the factors associated with the development of PTSD in the elderly following natural disasters encompassing age ( Jia et al., 2010;Rafiey et al., 2016), education (Lamoureux-Lamarche et al., 2016;Pietrzak, Goldstein, Southwick and Grant, 2012;Pietrzak, Southwick, Tracy, Galea and Norris, 2012), gender (Chen et al., 2011;Hikichi et al., 2016;Lamoureux-Lamarche et al., 2016;Pietrzak, Goldstein, Southwick and Grant, 2012;Pietrzak, Southwick, Tracy, Galea and Norris, 2012), property loss and relocation (Chen et al., 2011;Hikichi et al., 2016), income and financial loss (Kohn et al., 2005) and chronic illness (Heid et al., 2016). In addition, pre-existing mental condition (Hikichi et al., 2016;Kohn et al., 2005;Pietrzak, Goldstein, Southwick and Grant, 2012;Pietrzak, Southwick, Tracy, Galea and Norris, 2012), distress and fear during disaster (Kohn et al., 2005;Pietrzak, Goldstein, Southwick and Grant, 2012;Pietrzak, Southwick, Tracy, Galea and Norris, 2012), injury and witnessing injuries or death ( Jia et al., 2010), living companions and supports (Hikichi et al., 2016;Lamoureux-Lamarche et al., 2016;Pietrzak, Goldstein, Southwick and Grant, 2012;Pietrzak, Southwick, Tracy, Galea and Norris, 2012), bereavement (Hikichi et al., 2016;Jia et al., 2010), religiosity (Chen et al., 2011) and mental health service utilization ( Jia et al., 2010) can also be the predictors of the PTSD occurrence. ...